Wuhan Huazhong Numerical Control Co., Ltd HNC-18iT v4.0 Programming Manual page 74

6.2 Constant
6.2 6.2 Constant 6.2 Constant Constant Surface
Programming
Programming Programming Programming
G96 S
G97 S
Explanation Explanation Explanation of of of of the the the
Explanation the parameters
G96 activate the constant surface speed
S surface speed (m/min)
G97 deactivate the constant surface speed
S spindle speed (r/min)
Function Function
Function Function
G96 and G97 commands are to control the constant surface speed.
Note
Note Note Note:
The spindle speed must be controlled automatically when the constant surface
1)
cutting command is executed.
The maximum of spindle speed can be set by the axis parameter.
2)
Surface Speed
Surface Surface Speed Speed Speed Control
parameters parameters
parameters
Control (G96,
Control (G96, Control (G96, G97) (G96,
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6. Spindle Speed Function
G97)
G97) G97)